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vrc-udon-networking-rules

vrc-udon-networking-rules is a skill for Codex from sechiro/VRCUdonSkills-for-Codex. It costs 104 tokens per session (553 once invoked), scanned A, original, MIT.

A design guide for networking in VRChat worlds built with UdonSharp, the C#-based scripting system used by VRChat. It documents shared state, events, ownership, and what happens when a player joins late.

In plain words
What is it for?
Use it to define synced variables, network events, ownership transfers, late-join behavior, Player Data, Player Objects, and the networking rules document before implementation.
Why use it?
It prevents temporary events, lasting state, saving, and ownership decisions from being mixed together or assigned to multiple sources of truth.

Skill for Codex

Written for Codex: agents/openai.yaml present.

not rated 58repo 6mo ago A scan 104 tokens original MIT

Good fit Use it to define synced variables, network events, ownership transfers, late-join behavior, Player Data, Player Objects, and the networking rules document before implementation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sechiro/vrcudonskills-for-codex/vrc-udon-networking-rules
View source ↗ sechiro/VRCUdonSkills-for-Codex
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add sechiro/VRCUdonSkills-for-Codex --skill vrc-udon-networking-rules
Clone the repo
git clone --depth 1 https://github.com/sechiro/VRCUdonSkills-for-Codex

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for vrc-udon-networking-rules

README.md
[![agentmods](https://agentmods.dev/badge/skills/sechiro/vrcudonskills-for-codex/vrc-udon-networking-rules/github.svg)](https://agentmods.dev/skills/sechiro/vrcudonskills-for-codex/vrc-udon-networking-rules)
Your own site
<a href="https://agentmods.dev/skills/sechiro/vrcudonskills-for-codex/vrc-udon-networking-rules"><img src="https://agentmods.dev/badge/skills/sechiro/vrcudonskills-for-codex/vrc-udon-networking-rules/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for vrc-udon-networking-rules

Your own site · 80×15
<a href="https://agentmods.dev/skills/sechiro/vrcudonskills-for-codex/vrc-udon-networking-rules"><img src="https://agentmods.dev/badge/skills/sechiro/vrcudonskills-for-codex/vrc-udon-networking-rules.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 104 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 553 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00104 $0.00553
Opus 5.5 $0.00042 $0.00221
Sonnet 5.5 $0.00021 $0.00111
Haiku 4.5 $0.00010 $0.00055

Measured 2mo ago against content hash f7bd509a9cb8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

vrc-udon-networking-rules scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/vrc-udon-networking-rules/SKILL.md · 50 lines

What it actually says

VRC Udon Networking Rules

役割

VRChat UdonSharp のネットワーク挙動を、実装前に docs/NETWORKING_RULES.md として固定する。誰が状態を持つか、何を同期するか、何をイベントで流すか、Late Joiner をどう扱うかを先に決める。

この Skill を使う場面

  • synced variable を使う
  • SendCustomNetworkEvent を使う
  • Ownership の移譲や検証がある
  • Late Joiner 対応が必要
  • Player Data や Player Object を含むネットワーク仕様を project-owned 文書へ固定したい

この Skill を使わない場面

  • 保存方式だけを選びたい場合: vrc-udon-persistence-sync
  • UI や操作導線だけを設計したい場合: vrc-udon-ui-menu

進め方

  1. references/networking-guide.md を読む。
  2. 導入先に networking ルール文書が無ければ assets/templates/docs/NETWORKING_RULES.md を配置する。
  3. 仕様を次の順で埋める。
    • 状態正本
    • イベント
    • Ownership
    • Late Joiner
    • Persistence を含む復元順
  4. 実装前に docs/NETWORKING_RULES.md を確定する。

担当範囲

  • Network Event と同期変数の役割分離
  • Ownership の固定
  • Late Joiner 前提の仕様化
  • networking 文書雛形の配布

注意点

  • 一時イベントと持続状態を混ぜない
  • 誰が最終状態を確定するかを 1 箇所に寄せる
  • Persistence は in-instance sync の代替ではない
  • 公式根拠が薄い挙動は断定しない
Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 50 lines · 104 tokens per session scan A f7bd509a9cb8

Subscribe to this mod's changes

vrc-udon-networking-rules is a skill published in the GitHub repository sechiro/VRCUdonSkills-for-Codex (58 stars, last pushed 6mo ago), licensed MIT. It adds 104 tokens to every session and 553 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Game development
Related

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